摘要:
The present invention relates to a Variovorax sp. which produces an acylase having an asymmetric hydrolysis activity on an N-acetyl β-amino acid to selectively produce an R-β-amino acid, and a Burkholderia sp. which produces both an acylase having an asymmetric hydrolysis activity on an N-acetyl β-amino acid to selectively produce an S-β-amino acid and an acylase having an asymmetric hydrolysis activity of an N-acetyl β-amino acid to selectively produce an R-β-amino acid, and a process for the selective production of an S-, or R-β-amino acid using the above strains.
摘要:
The present invention relates to a Variovorax sp. which produces an acylase having an asymmetric hydrolysis activity on an N-acetyl β-amino acid to selectively produce an R-β-amino acid, and a Burkholderia sp. which produces both an acylase having an asymmetric hydrolysis activity on an N-acetyl β-amino acid to selectively produce an S-β-amino acid and an acylase having an asymmetric hydrolysis activity of an N-acetyl β-amino acid to selectively produce an R-β-amino acid, and a process for the selective production of an S-, or R-β-amino acid using the above strains.
摘要:
The present invention relates to a Variovorax sp. which produces an acylase having an asymmetric hydrolysis activity on an N-acetyl β-amino acid to selectively produce an R-β-amino acid, and a Burkholderia sp. which produces both an acylase having an asymmetric hydrolysis activity on an N-acetyl β-amino acid to selectively produce an S-β-amino acid and an acylase having an asymmetric hydrolysis activity of an N-acetyl β-amino acid to selectively produce an R-β-amino acid, and a process for the selective production of an S-, or R-β-amino acid using the above strains.
摘要:
The present invention relates to a Variovorax sp. which produces an acylase having an asymmetric hydrolysis activity on an N-acetyl β-amino acid to selectively produce an R-β-amino acid, and a Burkholderia sp. which produces both an acylase having an asymmetric hydrolysis activity on an N-acetyl β-amino acid to selectively produce an S-β-amino acid and an acylase having an asymmetric hydrolysis activity of an N-acetyl β-amino acid to selectively produce an R-β-amino acid, and a process for the selective production of an S-, or R-β-amino acid using the above strains.
摘要:
The present invention provides genes that encode the N-acetyl-(R,S)-β-amino acid acylases. The N-acetyl-(R,S)-β-amino acid acylases were isolated and purified from bacterial cells and the nucleotide sequences were determined. A host, such as Escherichia coli, was used to construct a high-expression system for these genes. The N-acetyl-(R)-β-amino acid acylase produced by Burkholderia sp. AJ110349 (FERM BP-10366) includes, for example, the protein having the amino acid sequence shown in SEQ. ID. NO. 8. The gene encoding this enzyme includes, for example, the DNA having the nucleotide sequence as shown in SEQ. ID. NO. 7. The N-acetyl-(S)-β-amino acid acylase produced by Burkholderia sp. AJ110349 (FERM BP-10366) includes, for example, the protein having the amino acid sequence shown in SEQ. ID. NO. 10. The gene encoding this enzyme includes, for example, the DNA having the nucleotide sequence shown inshown in SEQ. ID. NO. 9. The N-acetyl-(R)-β-amino acid acylase produced by Variovorax sp. AJ110348 (FERM BP-10367) includes, for example, the protein comprised of the amino acid sequence shown in SEQ. ID. NO. 12. The gene encoding this enzyme includes, for example, the DNA having the nucleotide sequence shown inshown in SEQ. ID. NO. 11.
摘要:
The present invention provides genes that encode the N-acetyl-(R,S)-β-amino acid acylases. The N-acetyl-(R,S)-β-amino acid acylases were isolated and purified from bacterial cells and the nucleotide sequences were determined. A host, such as Escherichia coli, was used to construct a high-expression system for these genes. The N-acetyl-(R)-β-amino acid acylase produced by Burkholderia sp. AJ110349 (FERM BP-10366) includes, for example, the protein having the amino acid sequence shown in SEQ. ID. NO. 8. The gene encoding this enzyme includes, for example, the DNA having the nucleotide sequence as shown in SEQ. ID. NO. 7. The N-acetyl-(S)-β-amino acid acylase produced by Burkholderia sp. AJ110349 (FERM BP-10366) includes, for example, the protein having the amino acid sequence shown in SEQ. ID. NO. 10. The gene encoding this enzyme includes, for example, the DNA having the nucleotide sequence shown inshown in SEQ. ID. NO. 9. The N-acetyl-(R)-β-amino acid acylase produced by Variovorax sp. AJ110348 (FERM BP-10367) includes, for example, the protein comprised of the amino acid sequence shown in SEQ. ID. NO. 12. The gene encoding this enzyme includes, for example, the DNA having the nucleotide sequence shown inshown in SEQ. ID. NO. 11.
摘要:
L-Glutamine is produced by culturing a coryneform bacterium which has L-glutamine producing ability and has been modified so that its intracellular glutamine synthetase activity should be enhanced, preferably which has been further modified so that its intracellular glutamate dehydrogenase activity should be enhanced, in a medium to produce and accumulate L-glutamine in the medium and collecting the L-glutamine.
摘要:
A plasmid isolatable from Corynebacterium thermoaminogenes, which comprises a gene coding for a Rep protein having the amino acid sequence shown in SEQ ID NO: 8 or an amino acid sequence having homology of 90% or more to the amino acid sequence shown in SEQ ID NO: 8, and has a size of about 4.4 kb or about 6 kb, or a derivative thereof.
摘要翻译:可从热棒状杆菌分离的质粒,其包含编码具有SEQ ID NO:8所示氨基酸序列的Rep蛋白的基因或与SEQ ID NO所示的氨基酸序列具有90%以上同源性的氨基酸序列 :8,并且具有约4.4kb或约6kb的大小,或其衍生物。
摘要:
A plasmid which is able to be isolated from Corynebacterium thermoaminogenes, and which comprises a gene coding for a Rep protein having the amino acid sequence shown in SEQ ID NO: 4 or an amino acid sequence having homology of 90% or more to the amino acid sequence shown in SEQ ID NO: 4. and has a size of about 4.4 kb or about 6 kb, or a derivative thereof.
摘要翻译:能够从嗜热棒杆菌分离的质粒,其包含编码具有SEQ ID NO:4所示的氨基酸序列的Rep蛋白的基因或与氨基酸同源性为90%以上的氨基酸序列 SEQ ID NO:4所示的序列,其大小为约4.4kb或约6kb,或其衍生物。
摘要:
A coryneform bacterium harboring an aspartokinase in which feedback inhibition by L-lysine and L-threonine is substantially desensitized, and comprising an enhanced DNA sequence coding for a dihydrodipicolinate reductase, an enhanced DNA sequence coding for dihydropicolinate reductase, an enhance DNA sequence coding for dihydropicolinate synthase, an enhanced DNA sequence coding for diaminopimelate decarboxylase and an enhanced DNA sequence coding for aspartate aminotransferase; a method for producing L-lysine comprising the steps of cultivating the coryneform bacterium in an appropriate medium to allow L-lysine to be produced and accumulated in a culture of the bacterium, and collecting L-lysine from the culture; and a recombinant DNA usable for production of the coryneform bacterium.